#include<stdio.h>
int main()
{
	int i,n,x,m,a[n],b=0;
	scanf("%d %d",&n,&x);
	for(i=0;i<n;i++)
	{
		scanf("%d",&m);
		a[i]=m;
		if(a[i]==x){
			printf("%d",i);
			b=1;
			break;
		}
			
		else
			b+=0;
	}
	if(b==0)
		printf("Not Found");
	return 0;
}
